Modular cartridge storage rack



FIG. 1 is a front perspective view of a modular cartridge storage rack showing my new design; the rear being flat and unornamented;

FIG. 2 is a front perspective view of a second embodiment of the rack shown in FIG. 1; the opposite side not shown being identical thereto;

FIG. 3 is a right side elevational view of FIG. 1; and

FIG. 4 is a right side elevational view of FIG. 2.

The top of the rack shown in FIGS. 1-4 is flat and unornamented. 

The ornamental design for a modular cartridge storage rack, as shown and described. 